Isaac Clarke, You’ve Changed In Dead Space 3

In the beginning, Dead Space 3 is set aboard a command center where Isaac talks to the Captain. He sends Isaac on a mission to rescue a woman on Tau Volantis and bring her back to Mars. Isaac accepts the mission because there is a warrant out for his arrest and his alternative is to deal with EarthGov. He reluctantly descends on to the iceball along with Ellie.

This next part could be considered a major spoiler, so read at your own risk! It’s about how Isaac Clarke has "changed."

Isaac has a split personality in Dead Space 3 and "Shadow Isaac" taunts Isaac every chance he gets. For example, Shadow Isaac calls Isaac an idiot after he falls into a tunnel late in the game. Isaac complains this rescue mission isn’t his mission and the shadow retorts and tells Isaac he turns his back on the wrong things. Isaac shouts to the shadow to shut up, who replies to Isaac by saying he’s making all of the noise. Dead Space 3 is going to have this kind of banter – a sarcastic shadow and Isaac crossing tongues. Players will be able to see the shadow as a separate on screen character.

Isaac (and his shadow) will come in contact with a "marker" on the frozen world in Dead Space 3 too…